From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 175CFC4363D for ; Wed, 21 Oct 2020 04:19:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AF92F22200 for ; Wed, 21 Oct 2020 04:19:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2440126AbgJUETB (ORCPT ); Wed, 21 Oct 2020 00:19:01 -0400 Received: from aibo.runbox.com ([91.220.196.211]:35154 "EHLO aibo.runbox.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2411917AbgJUETA (ORCPT ); Wed, 21 Oct 2020 00:19:00 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=runbox.com; s=selector1; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: MIME-Version:Date:Message-ID:From:References:Cc:To:Subject; bh=lokW6EPR1gGvrw+jQAtROfY+YGwZBe7P2txdVPg31H0=; b=gk9mRn3K5bQoIbZNooQoADXA6H EPPsSEZUluHAaWQhhzE6XWIF7KygXOFX93vxvBzYQ/EysFFadWgP0r7DX6wq9I/YCI+Xv4rML9DRh 6zF7JXMrVZh9QebJaP53GMPtfaMFCBjyE7d0BFaCcatYavlDqr2N13kZ6wmNBkmvxFO6Jyo8+5Wv8 u3y5fUPuvZGkXWbcezvHr/0EXj1McQDRaeYNIViztarkNueH0K7xFAnegZVwG1kRvcwksrEgmbSnV 6iTY73Kd3sXHd08vbqqbVcmmVYrOaPSMlNd3JUGK6NmGPlQ4UWhj6t6r0t6o4PPGCi0I5cp71IMhP Gie8s9bA==; Received: from [10.9.9.72] (helo=submission01.runbox) by mailtransmit03.runbox with esmtp (Exim 4.86_2) (envelope-from ) id 1kV5aT-0003xw-U8; Wed, 21 Oct 2020 06:18:58 +0200 Received: by submission01.runbox with esmtpsa [Authenticated alias (536975)] (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) id 1kV5aG-00016w-Ne; Wed, 21 Oct 2020 06:18:45 +0200 Subject: Re: Bug caused by 53965c79c2db (USB: Fix device driver race) To: Pany Cc: Alan Stern , Bastien Nocera , linux-usb@vger.kernel.org References: <20201017200200.GB842001@rowland.harvard.edu> <20201019174028.GF898631@rowland.harvard.edu> From: "M. Vefa Bicakci" Message-ID: <3fcc724f-5b5e-e441-fd12-31365d140773@runbox.com> Date: Wed, 21 Oct 2020 00:18:42 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.3.3 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: en-CA Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On 20/10/2020 23.17, Pany wrote: > Thank you so much for guiding me! > On Tue, Oct 20, 2020 at 12:04 PM M. Vefa Bicakci wrote: [Snipped by Vefa] >> Pany, in the mean-time, could you add the following string to your kernel's >> command line (i.e., via GRUB, or the actual boot-loader that you use) and >> let us know whether it helps to *work around* this issue with the latest >> versions of 5.8.y kernels? >> >> module_blacklist=apple-mfi-fastcharge > > And I also installed the official built kernel-5.8.15-201.fc32.x86_64.rpm [5]. > > Adding module_blacklist=apple-mfi-fastcharge to the GRUB entry did not > succeed in the kernel booting. > > With following kernel cmdline, I captured the journal [6]: > > kernel: Command line: > BOOT_IMAGE=(hd5,gpt3)/vmlinuz-5.8.15-201.fc32.x86_64 > root=/dev/mapper/fedora_localhost--live-root ro > resume=/dev/mapper/fedora_localhost--live-swap > rd.lvm.lv=fedora_localhost-live/root > rd.luks.uuid=luks-65d9ed28-ea08-4ea5-a1dd-7b2b086f5e09 > rd.lvm.lv=fedora_localhost-live/swap > module_blacklist=apple-mfi-fastcharge systemd.debug-shell=1 Hello Pany, My apologies, the original kernel command line entry I mentioned was incorrect; the module name needs to be specified with underscore characters ("_") instead of dash ("-") characters. Could you try the following as well? module_blacklist=apple_mfi_fastcharge Using this string in the kernel command line causes "modprobe apple-mfi-fastcharge" to fail with -EPERM on my system, and hence I am hoping that this should at least unblock your day-to-day use of recent kernels. Sorry again for the mistake in my earlier suggestion. Vefa